Switch CLI language with a dotnet option

[ncarandini]

Sometimes, expecially when reporting an issue or writing a blog post in a foreign language, it can be usefull to switch CLI to a non-system language.

Currently the dotnet CLI on Windows don't use the DOTNET_CLI_UI_LANGUAGE environment variable anymore and the workaround is to rename the folder of the system language in the dotnet SDK folder (located on "dotnet-install-directory\sdk\sdk-version"). For example, renaming it to it-off if the system language is Italian. Please note that renaming is better than deleting, as we can revert to the system language simply restoring the folder name (i.e. it-off to it).

This is tedious and error prone, and I'd like to use a dotnet option to set it , like dotnet --lang-en --help or dotnet --lang-es --help or dotnet --lang-jp --help.

Would it be feasible?

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[dsplaisted]

Are you saying DOTNET_CLI_UI_LANGUAGE has stopped working?

I think that environment variable affects the output that comes directly from the .NET CLI, but doesn't affect messages from other things such as MSBuild or the compilers. Could that be what you are seeing?

[marcpopMSFT]

Seems to work in preview 7 (set the value to "es")

[ncarandini]

Glad it works again, I've just tried and I can confirm.